SEISMIC AND STRONG WIND RESPONSE OBSERVATIONS OF NATIONAL HERITAGE FIVE STORY WOOD PAGODA AND ITS CONSIDERATION

Part 2 Wind response observation and numerical response calculations

Abstract

Motion behaviors of the national heritage five story wooden pagoda at Hokekyouji temple are observed from 2007. Continuing part 1,modal and response analyses for the pagoda are conducted. The model is made by using the beam vibration modes. Response analyses are carried out for both 3/11 earthquake and strong wind. As results of linear numerical calculations to strong earthquake motion and strong wind, the damping about 5%-10% would be agreed with observed response data. Modal analysis results showed the possibility of resonance between a pagoda frame and center column. However, in actual pagoda, it would be difficult to expect dynamic damper effects because of irregularities of pagoda structure.